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Cash and Cash Equivalents
6 Months Ended
Jun. 30, 2016
Cash and Cash Equivalents [Abstract]  
Cash and Cash Equivalents

8. Cash and Cash Equivalents

Cash and cash equivalents generally consist of cash, government securities, mutual funds, and money market funds. These securities are primarily held in two financial institutions and are uninsured except for the minimum Federal Deposit Insurance Corporation (“FDIC”) coverage, and have original maturity dates of three months or less.    As of June 30, 2016 and December 31, 2015, bank balances totaling approximately $6.1 million and $8.5 million, respectively, were uninsured.